Incubator thermometer



Feb. y

c. D.'r BoLlN .INCBATOR THERMOMETER Filed June 13, 1923 Patented Feb. 15, 1927.

Maur ePrice.-

CHARLES D. BOLIN, OF ST. LOUIS, MISSOURI'.

INCUBATOR THERMOMETER.

Appnca'tion filed aime 13, 1923. serial No. 645,038.

This invention relates to thermometers for use in incubators and has for its general object to provide a thermometer of this type which is provided with its own support or base, so that it may be placed on 'the shelf or tray 'of the incubator without interfering with placing the usual number of eggs in the incubator. Y

A further object of the invention is toV provide a thermometer of the type named, which will permit of ready reading ofthe temperature, as indicated by the mercury in the tube, and which will also permit of the close proximity of the thermometer bulb to at least two 4eggs located on eitherside thereof.

A further object of the invention relates to the construction of the thermometer frame or support, in a unique and highly useful shape, from asingle piece of metal.

The invention is illustrated in` the accompanying drawing in which Figure 1 is a perspective view of my improved thermometer;

Figure 2 is a view in end elevation thereof; and f Figure 3 is a plan view of a plate of metal from which the thermometer frame is made, showing the shape of the plate and the manner of cutting the same to enable it to be bent up to form the frame.

Referring now to the drawings, andespecially to Figures 1 and 2, the numeral 1 indicates the base of the frameV and 2, the upright portion thereof. This upright portion consists of legs or standards 3, 4, the latter being of greater length than the former, whereby to impart an upward incline to a scale plate 5 carrying the graduations indicating the degrees of temperature. Mounted on this scale plate is a thermometer tube 6 having a bulb 7, and to accommodate this bulb the scale plate is provided with an aperture 8. The scale plate is provided with small openings ends of soft metal bands 10 may be inserted, after the same have been caused to encircle the tube 6, after which they are separated and bent to lie Hat against the rear side of the scale plate. The scale plate is further provided with a small opening 11 to accom-Y` modate the mometer. Y

The temperature scale for an incubator thermometer is quite short and usually the range of temperatures indicated extends be.-

bent end or tip of the ther- Y single plate of metal will now 9 through which the.

tweenQO and 110degrees, as shown.` .103

being the critical temperature, the :graduation indicating this temperature is `con-y veniently prolonged into an arrow 12, with the number 103 at one end thereof, as

shown in VFigure 1. It is convenient to place on thebleft side of this arrow, the

word Low, and on the righ-tside,'the word Hig i, to indicate corresponding zones of temperature. In order that the ten'lperature indicated by the thermometer may be ascertained at a glance, the scale plate with a light .colored enamel such asrporcelain or the like, and make the graduations bers lon said scale, in blacl Thus the graduations and numbers on he scale standout prominently and form a pronounced4 contrast with the color of the lmercury in the tube. In addition, the mercury tube 6 is 'of the magnifying' type, fever thermometers and, as shown byFifgur-e 2, the upright portion of the thermometer frame is upwardly and rearwardly/inclined, which foi` general purposes of observation,

l preferably coat of the scale 13, and the num*-V such as employed in` at the usual angle kat whichathermometer.fiA Y der to strengthen. the structure, the outer edge portion of the upright -partv of thev frame between the rounded corners are preferably bent backward to form a curved iange,l

The manner of forming a frame from a be described, referring particularly to Figure 3. This plate is cut with a'die' from a sheet of metal into the shape shown, and at the same time, it is cut out longitudinally toward one edge, as indicated at 16, and slit transversely toward opposite-ends, as indicated at 17, 18, the transverse slit 18 being longer than the slit 17. At the same time, the apertures in the scale plate previously referred to, are formed. In stampingthe plate 14, I leave a marginal portion of metal 19 between the curved corners which are subsequently tu-rned over to form the strengthening Yflanges previously referred to, and corre-` are rounded as shown at 15; and inoras more clearly indicated in Figure i the metal, as indicated at 20, tok strengthen the structure.

I claim:

l. An incubator thermometer having a lat metal base, a scale plate rigidly supported on said base at the opposite ends thereof and at a distance therefrom, said scale plate and its supports constituting a unitary structure having the same plane of projection Vand forming an angle to the base, and a thermometer Vtube support-ed by said scale plate.

2 An incubatorl thermometer having a flat metal base,pa fiat metal scale plate and flat metal supports for said scale plate located at opposite ends ot and integral with the said base plate, said scale plate and its supports being in the same plane said plane being inclined at an angle to said base plate, and a thermometer tube mounted on said scale plate.

3. An incubator thermometer having a flat metal base, a Hat metal scale plate, and fiat metal supports for said scale plate located at opposite ends ot said base, said supports being of unequal length to position the scale plate in an inclined position at a distance above the base, and said scale plate and its supports being in the same plane and forming anA angle to the base, and a thermometer tube supported on said scale plate.

4. An incubator thermometer having a flat metal base, a flat metal scale plate, and Hat .metal supports for said scale plate located at opposite endsY of said base, said supports being ot unequal length to position the scale plate in an inclined position at a distance above the base, and said scale plate and its supports'being integral and in the same plane and forming an angle to the base, and a thermometer tube supported on said scale plate. y .Y

5. An incubator thermometer Jformed from a plate of metal slotted longitudinally7 near one edge and cut transversely at opposite ends ot' the slits with the ,cuts intersecting said slit, the outer marginal portion thus formed being bent upwardly and rearwardly at the termination ot said transverse cuts. to provide a base, and a scale plate located at a distance above the remainder of Athe plate which forms a base, and a thermometer tue mounted on said scale plate.

G. An incubator thermometer formed from a plate of metal ot general rectangular shape but Wider at one end than the other, and having a longitudinal slit located near one edge and intersecting transverse cuts located at opposite ends, the cut at the Wider end ot the plate being longer than that at the other end, and the marginal portion of the plate thus formed being bent upwardly and rearwardly at the termination ot' the transverse cuts to form a base, and an elevated scale plate supported thereby and upwardly inclined as respects said base and lying in a 'plane inclined thereto, and a thermometer tube mounted on said scale plate.y

In testimony whereof, 'I have hereunto set my hand. c

CHARLES D.BOLIN, 

